PP ETF Task Force AWS
Task I – Advance the effort to develop performance-based methods and specifications for asphalt emulsions. A goal will be development of surface performance-graded (SPG) emulsions.
Task II – Encourage adoption of uniform national standards Task III – Advance quality assurance, training, and certification Task IV – Ensure the implementation of new test methods, quality systems, and future research
( Task 2 )
Gain AASHTO approval for each emulsion-based pavement preservation treatment. • Subcommittee on Materials ─ Design Specifications ─ Material Specifications • Subcommittee on Construction ─ Construction Guide Specifications
( Task 2 )
Publish “Best Practices” for all emulsion-based pavement preservation treatments. Appeal FHWA for support
ETF Co-Chairs Colin Franco, Agency Chris Lubbers, Industry
Subcommittee on Research Darin Hazlett, Chair
Subcommittee on Residue Recovery & Testing Arlis Kadrmas, Chair
Subcommittee on Recycling Emulsions Todd Thomas, Chair
Subcommittee on Design Group - Mixtures Jim Moulthrop, Chair
Subcommittee on Quality Assurance Todd Shields, Co-Chair Education & Certification Larry Galehouse, Co-Chair
Subcommittee on Design Group - Sprays Gary Hicks, Chair Special Working Group Mike Voth, Chair
Organization Members State Agency 6 Industry 16 Academic 6 FHWA 2 Total = 30
Industry members represent the following entities: ─ ─ ─ ─ ─ ─ ─
Asphalt Emulsion Manufacturers Association Asphalt Institute Asphalt Recycling & Reclaiming Association AASHTO Resource (formerly AMRL) Asphalt Suppliers & Producers Emulsion Testing Laboratories International Slurry Surfacing Association
Group
Members
Supplier/Producers 10 Contractors 3 Laboratories 5 Academic 1 Polymer Supplier 1 Surfactant Suppliers 3 Total = 23
SPG Development is needed because: • Bleeding caused by binder flow at high temperatures as commonly seen in: ─ Wheel-paths under slow, heavy traffic, such as intersection approaches or uphill grades ─ Turning traffic at intersections, sharp curves, or switch-backs • Early chip retention; windshield damage; sweep time; cure time to traffic • Binder too brittle at low pavement temperatures: ─ Longer term aggregate loss ─ Snow plow damage ─ Impact of oxidative aging
Revised existing asphalt emulsion specifications: • M140-16 Standard Specification for Emulsified Asphalt • M208-16 Standard Specification for Cationic Emulsified Asphalt • M316-16 Standard Specification for PolymerModified Emulsified Asphalt
Status of AASHTO Design & Material Specs: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Chip Seal - approved Micro Surfacing - approved Slurry Seal - approved Fog Seal – approved Cold In-place Recycling - approved Tack Coat – pending approval Scrub Seal - pending approval Sand Seal – pending approval Foam Asphalt Stabilization – in development Bonded Surface Treatment – in development Cold Mixes – in development a.) Virgin b.) Recycled
Pavement Preservation Training & Certification for Agencies, Consultants, and Contractors •
Identified Training Resources (NCPP, TC3, Industry, NHI)
•
TSP·2 / NCPP Treatment Certifications developed for: — Slurry Systems — Chip Seals — Crack Treatments
Quality Assurance Protocols for Emulsified Asphalt Treatments — Quality Control Plans (contractor) — Acceptance Testing Plans (agency) — Independent Assurance (agency) — Vendor Supplied Material Certifications
1.
Complete drafting of AASHTO Standards for emulsion treatments
2.
Develop Quality Assurance protocols for micro surfacing and chip seals
3.
Research – Studies – Update Roadmap
1.
Promoting emulsion technologies through TSP·2 regional partnerships
2.
Propose large scale research studies – NCHRP – Pooled Fund
3.
Develop Quality Assurance protocols for all pavement preservation asphalt emulsion treatments
4.
Develop a SPG specification for asphalt emulsions using Superpave principles
Task II – Encourage adoption of uniform national standards Task III – Advance quality assurance, training, and certification Task IV – Ensure the implementation of new test methods, quality systems, and future research
( Task 2 )
Gain AASHTO approval for each emulsion-based pavement preservation treatment. • Subcommittee on Materials ─ Design Specifications ─ Material Specifications • Subcommittee on Construction ─ Construction Guide Specifications
( Task 2 )
Publish “Best Practices” for all emulsion-based pavement preservation treatments. Appeal FHWA for support
ETF Co-Chairs Colin Franco, Agency Chris Lubbers, Industry
Subcommittee on Research Darin Hazlett, Chair
Subcommittee on Residue Recovery & Testing Arlis Kadrmas, Chair
Subcommittee on Recycling Emulsions Todd Thomas, Chair
Subcommittee on Design Group - Mixtures Jim Moulthrop, Chair
Subcommittee on Quality Assurance Todd Shields, Co-Chair Education & Certification Larry Galehouse, Co-Chair
Subcommittee on Design Group - Sprays Gary Hicks, Chair Special Working Group Mike Voth, Chair
Organization Members State Agency 6 Industry 16 Academic 6 FHWA 2 Total = 30
Industry members represent the following entities: ─ ─ ─ ─ ─ ─ ─
Asphalt Emulsion Manufacturers Association Asphalt Institute Asphalt Recycling & Reclaiming Association AASHTO Resource (formerly AMRL) Asphalt Suppliers & Producers Emulsion Testing Laboratories International Slurry Surfacing Association
Group
Members
Supplier/Producers 10 Contractors 3 Laboratories 5 Academic 1 Polymer Supplier 1 Surfactant Suppliers 3 Total = 23
SPG Development is needed because: • Bleeding caused by binder flow at high temperatures as commonly seen in: ─ Wheel-paths under slow, heavy traffic, such as intersection approaches or uphill grades ─ Turning traffic at intersections, sharp curves, or switch-backs • Early chip retention; windshield damage; sweep time; cure time to traffic • Binder too brittle at low pavement temperatures: ─ Longer term aggregate loss ─ Snow plow damage ─ Impact of oxidative aging
Revised existing asphalt emulsion specifications: • M140-16 Standard Specification for Emulsified Asphalt • M208-16 Standard Specification for Cationic Emulsified Asphalt • M316-16 Standard Specification for PolymerModified Emulsified Asphalt
Status of AASHTO Design & Material Specs: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Chip Seal - approved Micro Surfacing - approved Slurry Seal - approved Fog Seal – approved Cold In-place Recycling - approved Tack Coat – pending approval Scrub Seal - pending approval Sand Seal – pending approval Foam Asphalt Stabilization – in development Bonded Surface Treatment – in development Cold Mixes – in development a.) Virgin b.) Recycled
Pavement Preservation Training & Certification for Agencies, Consultants, and Contractors •
Identified Training Resources (NCPP, TC3, Industry, NHI)
•
TSP·2 / NCPP Treatment Certifications developed for: — Slurry Systems — Chip Seals — Crack Treatments
Quality Assurance Protocols for Emulsified Asphalt Treatments — Quality Control Plans (contractor) — Acceptance Testing Plans (agency) — Independent Assurance (agency) — Vendor Supplied Material Certifications
1.
Complete drafting of AASHTO Standards for emulsion treatments
2.
Develop Quality Assurance protocols for micro surfacing and chip seals
3.
Research – Studies – Update Roadmap
1.
Promoting emulsion technologies through TSP·2 regional partnerships
2.
Propose large scale research studies – NCHRP – Pooled Fund
3.
Develop Quality Assurance protocols for all pavement preservation asphalt emulsion treatments
4.
Develop a SPG specification for asphalt emulsions using Superpave principles
